So basically, I've no problems with OSX, it installed fine (I needed to use -x on install and I had to delete a kernel patcher or something from my install USB), and it boots and runs fine with no boot tags necessary.

I'm not happy with it though, because at the moment it won't even boot unless I take out my dedicated GPU (the 6950). Once I do that it works fine, but it's annoying having to open my case every time I wanna switch between OSX and Windows.

So my question is - how can I use my 6950 with OSX ML? Or at least not have to unplug my GPU each time I boot OSX

I've heard that the 6950 does work with ML, but only on genuine macs and not hacktintoshes. On random forums and blogs people are claiming they've got their working - but never explained how. I've been trying to get all the info I can but it's all jumbled and different people are saying different things.

Does anybody have anything definitive they can tell me about if/how I can get my card working with OSX?

Posted 15 February 2013 - 06:05 PM

abcdefghijklmnop12345

InsanelyMac Protégé

Members

10 posts

Gender:Not Telling

GPU is unsupported. You must use the IGPU ie HD3000.

Nope. Thanks for reply, but the GPU actually is supported, just without hardware acceleration in ML yet. I just can't get it working because I haven't got any of the custom kexts and I don't know the method.

Hi, have you injected device properties key for HD4000 in org.chameleon.boot.plist?

Posted 15 February 2013 - 06:53 PM

No need to do this. Just set the Intel HD4000 as main GPU in the BIOS and connect your monitor(s) to that.

I tried this, assuming it would bypass by dedicated GPU, but for some reason it doesn't.

In my BIOS (It's the GIGABYTE UEFI) there are 4 options - Auto, iGPU, PCI, or PEG. PCI & PEG are both for dedicated, iGPU is effectively the integrated - but is associated with VirtuaMVP and stuff, so it still uses my 6950 somehow. Auto mode chooses the best option automatically - obviously the dedicated card.

Any other ideas?

Thanks

delete all ATI kexts and repair permissions

Okay will do. How do I fix the perms, with the kext utility? Do I need to add any others before removing them?

Posted 15 February 2013 - 07:45 PM

Posted 19 April 2013 - 10:42 PM

MacFaulty

InsanelyNut

Members

172 posts

Gender:Male

Location:Tulip & Cheese country

Interests:Java, PHP, Ruby & Linux/Windows server management

I know this thread is reasonably old, but I finally got it working on my desktop by setting the integrated as primary and if you boot in the mac you switch the cable to your dedicated card right away to bypass the cold boot bug. After a fes mins you have a fully working desktop with your HD6950 as primary card.